refactor: 重构文档结构和文件位置

docs: 添加Redis集成测试文档
docs: 添加ID生成器分析报告
docs: 添加自由布局和固定布局示例文档
test: 添加ID生成器单元测试
fix: 删除重复的前端文档文件

docs/test/branch-async-create.json

@@ -0,0 +1,19 @@
+{
+  "name": "Branch A->COND->B/C (async)",
+  "code": "branch_async",
+  "design_json": {
+    "name": "Branch A->COND->B/C (async)",
+    "execution_mode": "async",
+    "nodes": [
+      { "id": "A", "kind": "http", "name": "http A", "task": "http", "config": { "url": "https://httpbin.org/get", "method": "GET" } },
+      { "id": "COND", "kind": "condition", "name": "cond", "task": "condition", "config": { "expression": { "left": { "type": "constant", "value": true }, "operator": "is_true", "right": { "type": "constant", "value": true } } }, "ports": { "yes": { "id": "yes" }, "no": { "id": "no" } } },
+      { "id": "B", "kind": "http", "name": "http B", "task": "http", "config": { "url": "https://httpbin.org/anything/B", "method": "GET" } },
+      { "id": "C", "kind": "http", "name": "http C", "task": "http", "config": { "url": "https://httpbin.org/anything/C", "method": "GET" } }
+    ],
+    "edges": [
+      { "from": "A", "to": "COND" },
+      { "from": "COND", "to": "B", "condition": { "left": { "type": "constant", "value": true }, "operator": "is_true", "right": { "type": "constant", "value": true } } },
+      { "from": "COND", "to": "C", "condition": { "left": { "type": "constant", "value": true }, "operator": "is_false", "right": { "type": "constant", "value": true } } }
+    ]
+  }
+}